Hello Dave,
My name is Bart, I am a hamradio from the netherlands for over 35 years.
my video :
https://youtu.be/r5WVJLd-FXEI create a lot of things over the years and started using microcontrollers and designing things around it about 5-6 years ago.
Eevblog and a lot of other stuff on the internet gives me a lot of nice ideas to work on.
I do not rebuild or copy existing designs, nor do i use prebuild stuff like arduino shields, i develop my own solutions to a problem.
Designing PCB's using Eagle (dabbling with Kicad at the moment) i still etch my pcb's at home using the Tonertransfer method which i pefected.
Single and Double sided is no problem, even using small SMD components like FT232 is possible. I have given several 'hands-on' presentations on it like here :
http://www.pi4vlb.nl/2015/06/printen-maken-volgens-de-toner-transfer-methode-door-bart-pa2bv/nggallery/thumbnails In my video i show you a few things i made.
The radio is special to me, as it was a build for my late mother, she didn't understand modern radios any more, as the only knob on them nowadays is 'volume', the rest s via pushbuttons and menu's. So i created a radio with just a volume and a station knob. All the local cableradio stations are preprogrammed. Pushing the knobs (encoders) you still can set audio, time, display etc.
It's actually using 2 Atmega328p's, one for the display, receiving commands via i2c and using 'stylesheets' to display data send by the other one controlling the tuner and audio components.
She sadly died a while ago, and i'm working on converting it to a DAB radio.
The GPSDO's are two different approaches, one with a PLL chip, which is build by several HAM's already, the other one is an approach to create more long term stability. I started it using standard ttl logic, but the goal is to redesing it using a small fpga or cpld.
New projects in a design and prebuild-fase (i search on hamfests etc for components) are a Universal Multi-input DC to 3GHz power meter to display output power and SWR. It will accept all kinds of powercouplers and heads, and can be calibrated over a large range of frequencies and power ranging from microwatts to kilowats.
There is also a dual (or tri-) band (2m/70cm/23cm) transceiver in the making, but the difference with available quipment i that the transceiver has no knobs/dials/display. Everything will be done via a small battery operated remote control box via bleutooth, and audio is also going over bleutooth using regular mobile devices.
Also a 1.3GHz and 2.3GHz preamplifier are in the collecting parts fase, as a 13cm power amp, and an ATV transmitter.
So you see, ideas and projects enough, and the reason of entering the contest is that my 2-channel rigol is too small for the job. I tried to get my hands on one of the special offer RTB's, but in europe it was not a public offering. Buying one is not an option, it is just too expensive.
Thanks for your time, and i will follow your blog for as long as i can.
Regards,
Bart